I do a lot of my AM listening on a tiny battery-operated C.Crane Skywave radio and earphones, with bandwidth set to either 6 or 4 kHz for stations with adequate signal, instead of the default 3 kHz. Stations playing music are rich with treble and sound very good. News/talk stations sound nice and crisp.

A few of my other radios sound like they have literally 2 kHz bandwidth on the AM band. I can understand why most people completely avoid it.